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saanjh from dav, amritsar
Subject :IMO    Class : Class 7

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ishi gupta from DPS NOIDA, NOIDA
Subject :IMO    Class : Class 4

Ans 1:

Advika Narkar from VIBGYOR High Airoli, Navi Mumbai
Class : Class 5
at end I changed my answer to D ADMIN ANSWER PLEASE

Ans 2:

Jatan Ketankumar Shah from MGM ENGLISH MEDIUM SCHOOL, HALOL
Class : Class 4

Ans 3:

Utkarsh Priyam from DSE, hyderabad
Class : Class 5

Ans 4:

Harini from vibgyor high, bangalore
Class : Class 3
Why?

Ans 5:

Siddhant from Mris, ludhiana
Class : Class 6
12 16= 2828-1= 27hence the ans is A

Ans 6:

Utkarsh Priyam from DSE, hyderabad
Class : Class 5
Very Confusing

Ans 7:

ishi gupta from DPS NOIDA, NOIDA
Class : Class 4
WHY

Ans 8:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7

Ans 9:

Sourish Verma from NDPS, Indore
Class : Class 5

Ans 10:

FIONA SAHA from The Heritage School Rampurhat west Bengal India, Rampurhat Birbhum
Class : Class 4
Confusion for many days solution

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from Delhi Public School Noida, GHAZIABAD
Subject :IMO    Class : Class 5

Ans 1:

Anushka Sinha from Sushila Birla Girls School, Kolkata
Class : Class 5
Shouldn't it be A) 74?

Ans 2:

Aarna Gupta from DPS EAST, BANGALORE , Bengaluru
Class : Class 5

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Vihaan Agrawal from Mitra Academy, bangalore
Subject :IMO    Class : Class 2

Ans 1:

Kartik Kedar Bhogate from NPS , Singapore
Class : Class 2
it is option c

Ans 2:

Lavanya Pratap Singh from Delhi Public School, Noida
Class : Class 2
it is the correct answer

Ans 3:

Vihaan Agrawal from Mitra Academy, bangalore
Class : Class 2

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student from school, city
Subject :IMO    Class : Class 6

Ans 1:

animikh from don bosco school , kolkata
Class : Class 6

Ans 2:

Daksh from Greenwood High, Bengaluru
Class : Class 7

Ans 3:

Arush thorat from Bishops school , Pune
Class : Class 7

Ans 4:

Neil Pathak from The Millenium School, South City, Lucknow
Class : Class 8

Ans 5:

Mannan Aggarwal from Delhi Public School Chandigarh , Mohali
Class : Class 6

Ans 6:

Aadvik saini from Mvn sector 17, Faridabad
Class : Class 7

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ANWESHA THAKUR from DPS SECTOR 132 NOIDA, NOIDA
Subject :IMO    Class : Class 3

Ans 1:

ANWESHA THAKUR from DPS SECTOR 132 NOIDA, NOIDA
Class : Class 7

Ans 2:

Arav Agiwal from DAV publi school, Faridabad
Class : Class 3

Ans 3:

vineet8026@gmail.com from dps, Doha
Class : Class 1

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Pradipta Roy from Kendriya Vidyala, Balasore
Subject :IMO    Class : Class 6

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Saransh Agrawal from Meridian School, Hyderabad
Subject :IMO    Class : Class 5

Ans 1:

Seshasayee sudharsan from PSBB Learning Leadership Academy, Bangalore
Class : Class 6
14.7 metres

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ARIJIT SINGH from SAT PAUL MITTAL SCHOOL , Ludhiana
Subject :IMO    Class : Class 5

Ans 1:

Debarpan Das from Delhi Public School , Durgapur
Class : Class 6

Ans 2:

Aarya Teja from Bharatiya Vidya Bhavans Public School, Hyderabad
Class : Class 6
(c)

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Aarush Pandya from Inventure Academy, Bangalore
Subject :IMO    Class : Class 4

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